Help identifying strange algae

[Baldy]

fragit dan and jagermaier, is chemiclean fine for reef tanks? no harm to coral?

monocus, Ive had aiptasia problems right from the start. the LR i got was from a tear down of someone elses tank, so i got all the good and the bad with it. a matted filefish destroyed the problem last year around this time, but it came back. I just added the filefish on the 26th, so it wont be too long and he will have it under control (hopefully). Im using api kits for everything except phos (hannah checker), and mag (elos). nitrates show 0 and have for a very long time.